VeraPhase 6000 GNSS Antenna

Item# VP6000

The VeraPhase™ 6000 antenna is a full GNSS constellation antenna that provides the lowest axial ratios (horizon to horizon, over all azimuths) across all GNSS frequencies (<0.5dB at zenith, <2 dB at horizon). It offers exceptional front to back ratios, high efficiency (>70%), a tight PCV (± 1mm), and near constant PCO for all azimuth and elevation angles, over all in-band frequencies. View Full Description

Tallysman VeraPhase 6000™ GNSS Antenna

Tallysman has developed a unique alternative to choke-ring antennas through its patented VeraPhase technology. The patented VeraPhase™ 6000 (VP 6000) antenna Series is a full GNSS constellation antenna that provides the lowest axial ratios (horizon to horizon, over all azimuths) across all GNSS frequencies (<0.5dB at zenith, <2 dB at horizon). It offers exceptional front to back ratios, high efficiency (>70%), a tight PCV (± 1mm), and near constant PCO for all azimuth and elevation angles, over all in-band frequencies.

The performance of the VeraPhase™ is designed to rival that of geodetic / reference antennas, including choke ring antennas, but is lighter, smaller and more economical.

The VP 6000 provides high receive gain over the full GNSS spectrum: Low GNSS band (1164MHz to 1300MHz) L-band correction services (1525MHz to 1559MHz) and High GNSS band (1559MHz to 1610 MHz). It is available with a number of robust pre-filtered LNA variants, each with high IP3 to minimize de-sensing from high-level out-of-band signals, including 700MHz LTE, while still providing a noise figure of less than 2.2dB.

What is VeraPhase™?

VeraPhase™ is a patented technology that results in a high and low loss antenna with extremely low axial ratios through all elevations and azimuth angles across all frequencies. It ensures an excellent front back ratio and a low roll off to keep a fair amount of gain at horizon for low elevation tracking. It also provides millimetre level PCV through all elevations and azimuth angles across all frequencies. The Phase Centre Offset is virtually identical for all GNSS frequencies. Tallyman tell us this technology rivals other geodetic and reference antennas.

The basic antenna structure has crossed driven dipoles which are fed in quadrature and tuned to the L2 frequency and a coupled radiating element dimensioned to resonate at L1. These components are positioned in an unusual circular waveguide with the back end tapered and shorted and with the upper edge formed as a non-uniform saw tooth shape. The upper part of the waveguide is built of many vertical strap conductors on a fixed radius and one circumferential strap conductor. This unusual structure allows the equalization of the magnitude and the achievement of quadrature phase of the z directed current and phi directed currents.